Drug interactions
Colestipol + Vitamin a
Severity: Minor
Colestipol and Vitamin a: minor interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Colestipol is a bile acid sequestrant that interferes with absorption of fat-soluble vitamins, including vitamin A. Long-term use may lower vitamin A status, particularly with poor dietary intake.
What this interaction means in plain words
Colestipol and Vitamin a have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Colestipol belongs to Cardiovascular; Vitamin a belongs to Gastrointestinal Tract.
Why it happens
Binding of bile acids and fat-soluble vitamins in the gut by colestipol, reducing vitamin A absorption.
What to do
Take vitamin A at least 1 hour before or 4 hours after colestipol, and monitor vitamin A status during prolonged therapy.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Vitamin a
- Acitretin + Vitamin a Major
- Etretinate + Vitamin a Major
- Isotretinoin + Vitamin a Major
- Palovarotene + Vitamin a Major
- Bexarotene + Vitamin a Moderate
- Minocycline + Vitamin a Moderate
Other interactions of Colestipol
- Amlodipine-hydrochlorothiazide-valsartan + Colestipol Moderate
- Amlodipine-olmesartan-hydrochlorothiazide + Colestipol Moderate
- Atenolol-chlorthalidone + Colestipol Moderate
- Azilsartan-chlorthalidone + Colestipol Moderate
- Candesartan-hydrochlorothiazide + Colestipol Moderate
- Captopril-hydrochlorothiazide + Colestipol Moderate
Frequently asked questions
Can I take Colestipol with Vitamin a?
MediHelp rates the interaction as minor. Colestipol and Vitamin a have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Colestipol is a bile acid sequestrant that interferes with absorption of fat-soluble vitamins, including vitamin A. Long-term use may lower vitamin A status, particularly with poor dietary intake.
How serious is the interaction between Colestipol and Vitamin a?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Take vitamin A at least 1 hour before or 4 hours after colestipol, and monitor vitamin A status during prolonged therapy.
What other medicines interact with Vitamin a?
MediHelp also lists interactions of Vitamin a with, for example, Acitretin, Etretinate, Isotretinoin. The full list is on the Vitamin a page.
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